A few years back I began counting my age not in years, but days.
The day is the natural cycle of our lives. The cycle of light and dark, wakefulness and sleep, has more significance than the cycle of the seasons. Indeed, in equatorial latitudes, you hardly notice the passing of the seasons. The day is what counts.
Each day is a complete unit in itself. At the end of each day I can look back and take stock. How have I been? What have I learnt? What can I be grateful for?
I can hold a day's experience in mind quite easily. Trying to go back and take stock of a whole year is much harder. Numerous incidents and discoveries are inevitably forgotten.
I also find it far more meaningful to think that I have lived through nearly twenty thousand days this life, rather than 50 years. And it reframes the future. I have -- probably -- thousands of days still to come. Thousands of new days to discover, enjoy and learn from.
"Have you really lived 10,000 or more days,
or have you lived one day 10,000 or more times?"
-- Wayne Dyer